Photoreduction of carbon dioxide to carbon monoxide with hydrogen catalyzed by a rhenium(I) phenanthroline-polyoxometalate hybrid complex

Jessica Ettedgui, Yael Diskin-Posner, Lev Weiner, Ronny Neumann

Research output: Contribution to journalArticle

131 Citations (Scopus)

Abstract

A phenanthroline ligand decorated at the 5,6-position with a 15-crown-5 ether was used to prepare a metalorganic-polyoxometalate hybrid complex Re I(L)(CO)3CH3CN-MHPW12O40 (L = 15-crown-5-phenanthroline, M = Na+, H3O+). X-ray diffraction, 1H and 13C NMR, ESI-MS, IR, and elemental analysis were used to characterize this complex. In the presence of Pt/C, the polyoxometalate moiety in ReI(L)(CO)3CH 3CN-MHPW12O40 can oxidize H2 to two protons and two electrons which in the presence of visible light can catalyze the photoreduction of CO2 to CO with H2 as the reducing agent instead of the universally used amines as sacrificial reducing agents. An EPR spectrum of a stable intermediate species under reaction conditions shows characteristics of a PWVWVI 11O40 and a Re0 species with a tentative assignment of the intermediate as Re0(L)(CO)3(S)-MH3PWVW VI 11O40.

Original languageEnglish
Pages (from-to)188-190
Number of pages3
JournalJournal of the American Chemical Society
Volume133
Issue number2
DOIs
Publication statusPublished - Jan 19 2011

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Rhenium
Phenanthrolines
Reducing agents
Carbon Monoxide
Carbon Dioxide
Carbon monoxide
Hydrogen
Carbon dioxide
Reducing Agents
Paramagnetic resonance
Amines
Ethers
Protons
Ligands
Nuclear magnetic resonance
Crown Ethers
X ray diffraction
Electrons
Chemical analysis
X-Ray Diffraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Photoreduction of carbon dioxide to carbon monoxide with hydrogen catalyzed by a rhenium(I) phenanthroline-polyoxometalate hybrid complex. / Ettedgui, Jessica; Diskin-Posner, Yael; Weiner, Lev; Neumann, Ronny.

In: Journal of the American Chemical Society, Vol. 133, No. 2, 19.01.2011, p. 188-190.

Research output: Contribution to journalArticle

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N2 - A phenanthroline ligand decorated at the 5,6-position with a 15-crown-5 ether was used to prepare a metalorganic-polyoxometalate hybrid complex Re I(L)(CO)3CH3CN-MHPW12O40 (L = 15-crown-5-phenanthroline, M = Na+, H3O+). X-ray diffraction, 1H and 13C NMR, ESI-MS, IR, and elemental analysis were used to characterize this complex. In the presence of Pt/C, the polyoxometalate moiety in ReI(L)(CO)3CH 3CN-MHPW12O40 can oxidize H2 to two protons and two electrons which in the presence of visible light can catalyze the photoreduction of CO2 to CO with H2 as the reducing agent instead of the universally used amines as sacrificial reducing agents. An EPR spectrum of a stable intermediate species under reaction conditions shows characteristics of a PWVWVI 11O40 and a Re0 species with a tentative assignment of the intermediate as Re0(L)(CO)3(S)-MH3PWVW VI 11O40.

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